last night, Apple announced a new 12-inch MacBook with Retina display. He received one physical port USB Type C, which replaces all the ports at once and is used both for charging and, for example, to output an HDMI signal. For simultaneous use an external video device and, say, the hard drive will have to buy an additional adapter.

the Cost of adapter will be $79, you can buy a cheap smartphone. However, for headphones to use it don't have audiojack on the new MacBook is still there and is at the other end of the body.

the Adapter for $79 has one USB 3.0 port, one USB port-C and one HDMI port or VGA to choose from. Expensive accessories for buyers of Apple technology are not new. Most likely, soon the market will be cheaper counterparts adapter - USB-C is fully open.